@keyframes marquee {
    from { transform: translateX(0); }
    to { transform: translateX(-50%); }
}

.info_banner {
    background-color: #ffcc00;
    display: block;
    position: fixed;
    z-index: 999;
    bottom: 0; left: 0; 
    width: 100%; height: 4rem;
}
.info_banner_inner {
    color: #FFFFFF;
    width: 200%; line-height: 4rem;
    animation: marquee 10s linear infinite;
    white-space: nowrap;
    -webkit-hyphens: none;
    -moz-hyphens: none;
    hyphens: none;
}
.info_banner_inner:hover {
    color: #000000;
}
.info_banner_inner span {
    display: inline-block;
}

@media screen and (min-width:40em){
    .info_banner_inner {
        animation: marquee 32s linear infinite;
    }
}